Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 2 - Think and Discuss: 85


No, Newton's Law is not violated, because frictional forces are acting.

Work Step by Step

If you could magically turn off all friction acting on the bowling ball after it started rolling, it would continue in motion at the same speed. But in the real world, when surfaces rub together or an object moves through air, there is always some friction, so the ball slows down. This doesn’t violate Newton's first law, because there is an external force. This is discussed on page 26.
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